What's Gravity Doing to Domino's?

The Queen's coffin was carried on a gun carriage. Every single week its wheels have been oiled and turned around one quarter just in case gravity affected and mis-miss shaped the wheels. But because I mean gravity doesn't do that. We've got other wheels in the world haven't we? It's not like I come back to my car after I haven't driven it for a month and they're all square. What's gravity doing to it sorry? Making it flat. Domino's pizza actually has to change the color in anticipation.